I couldn't find specific information about the company "Manteca" from the provided URLs or search results. However, based on the LinkedIn URL, it appears to be a fintech company. Without direct access to their content, I can infer that Manteca Fintech likely offers financial technology services, targeting businesses or individuals seeking innovative financial solutions. Their unique selling proposition might involve streamlining financial processes or providing accessible financial tools. For precise details, visiting their LinkedIn page or website would be necessary.